摘要
对油气初次运移模型进行了分析,认为源岩层具有一定的渗透能力,渗透能力越高,初次运移的能力就越强;渗透能力越低,封存地层压力的能力就越强。源岩层的非均质性和微裂缝对初次运移十分不利,它们把油气滞留在源岩层内使其成为微油藏。薄层生烃潜力小,排烃效率高,聚集能力差;厚层生烃潜力大,排烃效率低,聚集能力强。
A study was conducted on the model of primary migration of oil and gas. It is believed that source rocks still have certain permeability. The higher the permeability, the stronger the ability of primary migration of oil and gas out of source rocks is. And the lower the permeability, the stronger the ability to seal the reservoir pressure of source rocks. The heterogeneity and micro-fissures in source rocks are unfavorable to primary migration of oil and gas, which retained some oil gas within the source rocks forever as micro-rcservoirs. Thinner source rocks have a lower a potential capacity of hydrocarbon generation, a higher capacity of hydrocarbon drainage and a lower capacity of hydrocarbon accumulation. However thicker source rocks have a higher potential capacity of hydrocarbon generation, a lower capacity of hydrocarbon drainage and a higher capacity of hydrocarhon accumulation.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2006年第2期247-250,共4页
Xinjiang Petroleum Geology
关键词
岩石
源岩
油气运移
模型
渗透率
地层压力
rock
source rock
hydrocarbon migration
model
permeability
formation pressure
